Mont. Code Ann. § 39-51-3205

Any person who shall willfully violate any provision of this chapter or any order or rule thereunder, the violation of which is made unlawful or the observance of which is required under the terms of this chapter and for which a penalty is neither prescribed herein nor provided by any other applicable statute, shall be punished by a fine of not less than $50 or more than $500 or by imprisonment for not less than 3 days or more than 30 days in the county jail or by both such fine and imprisonment, and each day such violation continues shall be deemed to be a separate offense.